52.Somatostatin (GIH) is secreted by A. Pituitary B. Thyroid C. Pineal D. Hypothalamus
Option D Hypothalamus is present in the forebrain. This gland secretes hormones that regulate the synthesis and secretion of hormones of pituitary gland. Somatostatin, also known as GHIH (Growth hormone inhibiting hormone) is secreted from hypothalamus and inhibits the release of growth hormone from pituitary gland. So, the correct answer is 'Hypothalamus'.